Action of uniting of small droplets of one liquid preparatory to its being separated from another liquid.
The process where small aerosols and fine mists are combined into larger droplets that can be removed from an air stream. Final coalescing is usually done with a specific coalescing element after the air stream passes through several baffle stages.
Separation of mixtures of immiscible fluids (for example water & oil) having different specific gravities. Here fine droplets collide and by becoming larger they separate out of solution more rapidly.